At present, the control of the stepper motor are mainly composed of dispersion device annular pulse distributor, software annular pulse distributor, special integrated chip annular pulse distributor, etc. This design chooses the third way, with PMM8713 three-phase or four phase pulse distributor of stepper motor, the SI -7300 a two phase or four phase power drive, composed of four phase stepper motor power drive circuit, in order to improve the level of integration and reliability of PMM8713 is Japan's sanyo electric company production pulse distributor of stepper motor, suitable for three-phase or four phase stepper motor control. Control three phase or four phase stepper motor can choose 3 kinds of excitation ways, each phase minimum suction to pull out to 20 ma current, it not only satisfy the requirement of the power amplifier level after input, and are embedded in all of its input Schmitt trigger circuit, strong anti-jamming capability, stepper motor power driver circuit can be divided into two kinds of driving mode, the voltage and current. Current drive mode is the most commonly used PWM constant current chopper driver circuit, which is the most common way of high-performance drive, the drive circuit is used in the numerical control plasma arc cutting machine automatically adjustable high pressure system, the system of the motor is 42 byg009 type hybrid stepping motor, the driving voltage for dc 24 v. Through practice proved that the step motor power drive circuit control system has simple structure, stable performance, high efficiency, good torque frequency characteristics, can be widely used in small electromechanical integration equipment. Step progress motor the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone:
